doc update

Author: camilo

check/qlibs_cpp_test.cpp

@@ -196,6 +196,7 @@ void test_fis( void )
 
 
     tipper << service << 1 << food << 9;
+
     tipper.fuzzify();
     if ( tipper.inference() ) {
         tipper.deFuzzify();

doc/qfis.dox

@@ -407,4 +407,20 @@
 *  }
 *  @endcode
 *
+*
+* @section qfis_codegen Code generation
+*
+* Building a fuzzy system in code can become tedious, especially when you want
+* to tune membership function parameters. It would be appropriate to have a
+* graphical tool that reflects the changes made by each tweak.
+*
+* Although the FIS engine does not provide such a tool, a well-known tool,
+* MATLAB's Fuzzy Logic Toolbox, can be used to desig and build the fuzzy system.
+* What qLibs++ does provide is a command-line tool that can be used to take a FIS file
+* generated by MATLAB and generate C++ code based on the FIS engine.
+*
+* Download the C++-Code generator here:
+*
+* <a href="https://github.com/kmilo17pet/fiscodegen/releases/tag/0.1.2"><img src="https://img.shields.io/badge/download-github-from?logo=github"></a>
+*
 */